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HDDS-1604. ContainerReader#initializeUsedBytes leaks DB reference. Co… (#866)

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This commit is contained in:
Xiaoyu Yao 2019-05-28 18:39:23 -07:00 committed by GitHub
parent 0c73dba3a6
commit 7f2e87a419
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20 changed files with 134 additions and 102 deletions
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2
hadoop-hdds/container-service/src/main/java/org/apache/hadoop/ozone/container/common/statemachine/commandhandler/DeleteBlocksCommandHandler.java
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@ -48,7 +48,7 @@
import org.apache.hadoop.ozone.protocol.commands.SCMCommand;
import org.apache.hadoop.util.Time;
import org.apache.hadoop.utils.BatchOperation;
import org.apache.hadoop.ozone.container.common.utils.ContainerCache.ReferenceCountedDB;
import org.apache.hadoop.ozone.container.common.utils.ReferenceCountedDB;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

70
hadoop-hdds/container-service/src/main/java/org/apache/hadoop/ozone/container/common/utils/ContainerCache.java
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@ -28,11 +28,8 @@
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.Closeable;
import java.io.File;
import java.io.IOException;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
@ -69,22 +66,6 @@ public synchronized static ContainerCache getInstance(Configuration conf) {
return cache;
}
/**
* Closes a db instance.
*
* @param containerPath - path of the container db to be closed.
* @param db - db instance to close.
*/
private void closeDB(String containerPath, MetadataStore db) {
if (db != null) {
try {
db.close();
} catch (Exception e) {
LOG.error("Error closing DB. Container: " + containerPath, e);
}
}
}
/**
* Closes all the db instances and resets the cache.
*/
@ -183,55 +164,4 @@ public void removeDB(String containerDBPath) {
lock.unlock();
}
}
/**
* Class to implement reference counting over instances handed by Container
* Cache.
*/
public class ReferenceCountedDB implements Closeable {
private final AtomicInteger referenceCount;
private final AtomicBoolean isEvicted;
private final MetadataStore store;
private final String containerDBPath;
public ReferenceCountedDB(MetadataStore store, String containerDBPath) {
this.referenceCount = new AtomicInteger(0);
this.isEvicted = new AtomicBoolean(false);
this.store = store;
this.containerDBPath = containerDBPath;
}
private void incrementReference() {
this.referenceCount.incrementAndGet();
}
private void decrementReference() {
this.referenceCount.decrementAndGet();
cleanup();
}
private void setEvicted(boolean checkNoReferences) {
Preconditions.checkState(!checkNoReferences ||
(referenceCount.get() == 0),
"checkNoReferences:%b, referencount:%d",
checkNoReferences, referenceCount.get());
isEvicted.set(true);
cleanup();
}
private void cleanup() {
if (referenceCount.get() == 0 && isEvicted.get() && store != null) {
closeDB(containerDBPath, store);
}
}
public MetadataStore getStore() {
return store;
}
public void close() {
decrementReference();
}
}
}

101
hadoop-hdds/container-service/src/main/java/org/apache/hadoop/ozone/container/common/utils/ReferenceCountedDB.java Normal file
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@ -0,0 +1,101 @@
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.ozone.container.common.utils;
import com.google.common.base.Preconditions;
import org.apache.hadoop.utils.MetadataStore;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.Closeable;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicInteger;
/**
* Class to implement reference counting over instances handed by Container
* Cache.
* Enable DEBUG log below will enable us quickly locate the leaked reference
* from caller stack. When JDK9 StackWalker is available, we can switch to
* StackWalker instead of new Exception().printStackTrace().
*/
public class ReferenceCountedDB implements Closeable {
private static final Logger LOG =
LoggerFactory.getLogger(ReferenceCountedDB.class);
private final AtomicInteger referenceCount;
private final AtomicBoolean isEvicted;
private final MetadataStore store;
private final String containerDBPath;
public ReferenceCountedDB(MetadataStore store, String containerDBPath) {
this.referenceCount = new AtomicInteger(0);
this.isEvicted = new AtomicBoolean(false);
this.store = store;
this.containerDBPath = containerDBPath;
}
public void incrementReference() {
this.referenceCount.incrementAndGet();
if (LOG.isDebugEnabled()) {
LOG.debug("IncRef {} to refCnt {} \n", containerDBPath,
referenceCount.get());
new Exception().printStackTrace();
}
}
public void decrementReference() {
this.referenceCount.decrementAndGet();
if (LOG.isDebugEnabled()) {
LOG.debug("DecRef {} to refCnt {} \n", containerDBPath,
referenceCount.get());
new Exception().printStackTrace();
}
cleanup();
}
public void setEvicted(boolean checkNoReferences) {
Preconditions.checkState(!checkNoReferences ||
(referenceCount.get() == 0),
"checkNoReferences:%b, referencount:%d, dbPath:%s",
checkNoReferences, referenceCount.get(), containerDBPath);
isEvicted.set(true);
cleanup();
}
private void cleanup() {
if (referenceCount.get() == 0 && isEvicted.get() && store != null) {
if (LOG.isDebugEnabled()) {
LOG.debug("Close {} refCnt {}", containerDBPath,
referenceCount.get());
}
try {
store.close();
} catch (Exception e) {
LOG.error("Error closing DB. Container: " + containerDBPath, e);
}
}
}
public MetadataStore getStore() {
return store;
}
public void close() {
decrementReference();
}
}

2
hadoop-hdds/container-service/src/main/java/org/apache/hadoop/ozone/container/keyvalue/KeyValueBlockIterator.java
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@ -31,7 +31,7 @@
import org.apache.hadoop.utils.MetaStoreIterator;
import org.apache.hadoop.utils.MetadataKeyFilters;
import org.apache.hadoop.utils.MetadataKeyFilters.KeyPrefixFilter;
import org.apache.hadoop.ozone.container.common.utils.ContainerCache.ReferenceCountedDB;
import org.apache.hadoop.ozone.container.common.utils.ReferenceCountedDB;
import org.apache.hadoop.utils.MetadataStore.KeyValue;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

2
hadoop-hdds/container-service/src/main/java/org/apache/hadoop/ozone/container/keyvalue/KeyValueContainer.java
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@ -73,7 +73,7 @@
import static org.apache.hadoop.hdds.protocol.datanode.proto.ContainerProtos
.Result.UNSUPPORTED_REQUEST;
import org.apache.hadoop.ozone.container.common.utils.ContainerCache.ReferenceCountedDB;
import org.apache.hadoop.ozone.container.common.utils.ReferenceCountedDB;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

2
hadoop-hdds/container-service/src/main/java/org/apache/hadoop/ozone/container/keyvalue/KeyValueContainerCheck.java
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@ -35,7 +35,7 @@
import java.io.IOException;
import java.util.List;
import org.apache.hadoop.ozone.container.common.utils.ContainerCache.ReferenceCountedDB;
import org.apache.hadoop.ozone.container.common.utils.ReferenceCountedDB;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

2
hadoop-hdds/container-service/src/main/java/org/apache/hadoop/ozone/container/keyvalue/helpers/BlockUtils.java
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@ -37,7 +37,7 @@
import org.apache.hadoop.ozone.container.common.helpers.ContainerUtils;
import org.apache.hadoop.ozone.container.keyvalue.KeyValueContainerData;
import org.apache.hadoop.ozone.container.common.utils.ContainerCache;
import org.apache.hadoop.ozone.container.common.utils.ContainerCache.ReferenceCountedDB;
import org.apache.hadoop.ozone.container.common.utils.ReferenceCountedDB;
import java.io.IOException;

2
hadoop-hdds/container-service/src/main/java/org/apache/hadoop/ozone/container/keyvalue/helpers/KeyValueContainerUtil.java
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@ -39,7 +39,7 @@
import com.google.common.base.Preconditions;
import org.apache.commons.io.FileUtils;
import org.apache.hadoop.ozone.container.common.utils.ContainerCache.ReferenceCountedDB;
import org.apache.hadoop.ozone.container.common.utils.ReferenceCountedDB;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

2
hadoop-hdds/container-service/src/main/java/org/apache/hadoop/ozone/container/keyvalue/impl/BlockManagerImpl.java
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@ -35,7 +35,7 @@
import org.apache.hadoop.ozone.container.common.utils.ContainerCache;
import org.apache.hadoop.utils.BatchOperation;
import org.apache.hadoop.utils.MetadataKeyFilters;
import org.apache.hadoop.ozone.container.common.utils.ContainerCache.ReferenceCountedDB;
import org.apache.hadoop.ozone.container.common.utils.ReferenceCountedDB;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

2
hadoop-hdds/container-service/src/main/java/org/apache/hadoop/ozone/container/keyvalue/statemachine/background/BlockDeletingService.java
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@ -43,7 +43,7 @@
import org.apache.hadoop.utils.BackgroundTaskResult;
import org.apache.hadoop.utils.BatchOperation;
import org.apache.hadoop.utils.MetadataKeyFilters.KeyPrefixFilter;
import org.apache.hadoop.ozone.container.common.utils.ContainerCache.ReferenceCountedDB;
import org.apache.hadoop.ozone.container.common.utils.ReferenceCountedDB;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

7
hadoop-hdds/container-service/src/main/java/org/apache/hadoop/ozone/container/ozoneimpl/ContainerReader.java
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@ -41,7 +41,7 @@
import org.apache.hadoop.ozone.container.keyvalue.helpers.BlockUtils;
import org.apache.hadoop.ozone.container.keyvalue.helpers.KeyValueContainerUtil;
import org.apache.hadoop.utils.MetadataKeyFilters;
import org.apache.hadoop.ozone.container.common.utils.ContainerCache.ReferenceCountedDB;
import org.apache.hadoop.ozone.container.common.utils.ReferenceCountedDB;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@ -237,9 +237,9 @@ public void verifyAndFixupContainerData(ContainerData containerData)
private void initializeUsedBytes(KeyValueContainer container)
throws IOException {
KeyValueBlockIterator blockIter = new KeyValueBlockIterator(
try (KeyValueBlockIterator blockIter = new KeyValueBlockIterator(
container.getContainerData().getContainerID(),
new File(container.getContainerData().getContainerPath()));
new File(container.getContainerData().getContainerPath()))) {
long usedBytes = 0;
while (blockIter.hasNext()) {
@ -258,3 +258,4 @@ private void initializeUsedBytes(KeyValueContainer container)
container.getContainerData().setBytesUsed(usedBytes);
}
}
}

2
hadoop-hdds/container-service/src/test/java/org/apache/hadoop/ozone/container/keyvalue/TestKeyValueBlockIterator.java
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@ -34,7 +34,7 @@
import org.apache.hadoop.ozone.container.keyvalue.helpers.BlockUtils;
import org.apache.hadoop.test.GenericTestUtils;
import org.apache.hadoop.utils.MetadataKeyFilters;
import org.apache.hadoop.ozone.container.common.utils.ContainerCache.ReferenceCountedDB;
import org.apache.hadoop.ozone.container.common.utils.ReferenceCountedDB;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;

2
hadoop-hdds/container-service/src/test/java/org/apache/hadoop/ozone/container/keyvalue/TestKeyValueContainer.java
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@ -36,7 +36,7 @@
import org.apache.hadoop.ozone.container.keyvalue.helpers.BlockUtils;
import org.apache.hadoop.test.GenericTestUtils;
import org.apache.hadoop.util.DiskChecker;
import org.apache.hadoop.ozone.container.common.utils.ContainerCache.ReferenceCountedDB;
import org.apache.hadoop.ozone.container.common.utils.ReferenceCountedDB;
import org.junit.Assert;
import org.junit.Before;

2
hadoop-hdds/container-service/src/test/java/org/apache/hadoop/ozone/container/keyvalue/TestKeyValueContainerCheck.java
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@ -35,7 +35,7 @@
import org.apache.hadoop.ozone.container.common.volume.VolumeSet;
import org.apache.hadoop.ozone.container.keyvalue.helpers.BlockUtils;
import org.apache.hadoop.test.GenericTestUtils;
import org.apache.hadoop.ozone.container.common.utils.ContainerCache.ReferenceCountedDB;
import org.apache.hadoop.ozone.container.common.utils.ReferenceCountedDB;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;

4
hadoop-hdds/container-service/src/test/java/org/apache/hadoop/ozone/container/ozoneimpl/TestOzoneContainer.java
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@ -33,7 +33,7 @@
import org.apache.hadoop.ozone.container.common.impl.ContainerSet;
import org.apache.hadoop.ozone.container.common.statemachine.DatanodeStateMachine;
import org.apache.hadoop.ozone.container.common.statemachine.StateContext;
import org.apache.hadoop.ozone.container.common.utils.ContainerCache;
import org.apache.hadoop.ozone.container.common.utils.ReferenceCountedDB;
import org.apache.hadoop.ozone.container.common.volume.HddsVolume;
import org.apache.hadoop.ozone.container.common.volume.RoundRobinVolumeChoosingPolicy;
import org.apache.hadoop.ozone.container.common.volume.VolumeSet;
@ -155,7 +155,7 @@ private long addBlocks(KeyValueContainer container,
long freeBytes = container.getContainerData().getMaxSize();
long containerId = container.getContainerData().getContainerID();
ContainerCache.ReferenceCountedDB db = BlockUtils.getDB(container
ReferenceCountedDB db = BlockUtils.getDB(container
.getContainerData(), conf);
for (int bi = 0; bi < blocks; bi++) {

2
hadoop-ozone/integration-test/src/test/java/org/apache/hadoop/ozone/TestStorageContainerManagerHelper.java
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@ -40,7 +40,7 @@
import org.apache.hadoop.ozone.web.utils.OzoneUtils;
import org.apache.hadoop.utils.MetadataKeyFilters;
import org.apache.hadoop.utils.MetadataKeyFilters.KeyPrefixFilter;
import org.apache.hadoop.ozone.container.common.utils.ContainerCache.ReferenceCountedDB;
import org.apache.hadoop.ozone.container.common.utils.ReferenceCountedDB;
import java.io.IOException;
import java.io.OutputStream;

2
hadoop-ozone/integration-test/src/test/java/org/apache/hadoop/ozone/container/common/TestBlockDeletingService.java
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@ -45,7 +45,7 @@
import org.apache.hadoop.test.GenericTestUtils.LogCapturer;
import org.apache.hadoop.utils.BackgroundService;
import org.apache.hadoop.utils.MetadataKeyFilters;
import org.apache.hadoop.ozone.container.common.utils.ContainerCache.ReferenceCountedDB;
import org.apache.hadoop.ozone.container.common.utils.ReferenceCountedDB;
import org.junit.AfterClass;
import org.junit.Assert;
import org.junit.Test;

2
hadoop-ozone/integration-test/src/test/java/org/apache/hadoop/ozone/container/common/impl/TestContainerPersistence.java
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@ -47,7 +47,7 @@
import org.apache.hadoop.ozone.container.keyvalue.interfaces.ChunkManager;
import org.apache.hadoop.ozone.container.keyvalue.interfaces.BlockManager;
import org.apache.hadoop.test.GenericTestUtils;
import org.apache.hadoop.ozone.container.common.utils.ContainerCache.ReferenceCountedDB;
import org.apache.hadoop.ozone.container.common.utils.ReferenceCountedDB;
import org.junit.After;
import org.junit.AfterClass;
import org.junit.Assert;

2
hadoop-ozone/integration-test/src/test/java/org/apache/hadoop/ozone/container/common/statemachine/commandhandler/TestBlockDeletion.java
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@ -50,7 +50,7 @@
import org.apache.hadoop.ozone.protocol.commands.RetriableDatanodeEventWatcher;
import org.apache.hadoop.test.GenericTestUtils;
import org.apache.hadoop.test.GenericTestUtils.LogCapturer;
import org.apache.hadoop.ozone.container.common.utils.ContainerCache.ReferenceCountedDB;
import org.apache.hadoop.ozone.container.common.utils.ReferenceCountedDB;
import org.junit.Assert;
import org.junit.BeforeClass;
import org.junit.Test;

2
hadoop-ozone/integration-test/src/test/java/org/apache/hadoop/ozone/container/common/statemachine/commandhandler/TestCloseContainerByPipeline.java
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@ -41,7 +41,7 @@
import org.apache.hadoop.ozone.om.helpers.OmKeyLocationInfo;
import org.apache.hadoop.ozone.protocol.commands.CloseContainerCommand;
import org.apache.hadoop.test.GenericTestUtils;
import org.apache.hadoop.ozone.container.common.utils.ContainerCache.ReferenceCountedDB;
import org.apache.hadoop.ozone.container.common.utils.ReferenceCountedDB;
import org.junit.AfterClass;
import org.junit.Assert;
import org.junit.BeforeClass;